64244744 has 16 divisors (see below), whose sum is σ = 124613100. Its totient is φ = 31014592.

The previous prime is 64244743. The next prime is 64244767. The reversal of 64244744 is 44744246.

It can be written as a sum of positive squares in 2 ways, for example, as 59876644 + 4368100 = 7738^2 + 2090^2 .

It is not an unprimeable number, because it can be changed into a prime (64244743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138227 + ... + 138690.

Almost surely, 2^64244744 is an apocalyptic number.

It is an amenable number.

64244744 is a deficient number, since it is larger than the sum of its proper divisors (60368356).

64244744 is a wasteful number, since it uses less digits than its factorization.

64244744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276952 (or 276948 counting only the distinct ones).

The product of its digits is 86016, while the sum is 35.

The square root of 64244744 is about 8015.2819039632. The cubic root of 64244744 is about 400.5092347581.

The spelling of 64244744 in words is "sixty-four million, two hundred forty-four thousand, seven hundred forty-four".